Condensed Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net loss	$ (188,425)	$ (44,437)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	33,135	30,171
Stock-based compensation	188,613	79
Deferred income taxes	(1,635)	(170)
Change in fair value of warrant and derivative liabilities	5,000	16,400
Gain on extinguishment of debt	(10,000)
Others, net	2,509	2,880
Changes in non-cash working capital (net of acquisitions):
Account receivable	7,423	28,967
Prepaid expenses	(1,917)	(450)
Other current assets	4,316	349
Other non-current assets	(542)	1,294
Deferred revenue	(1,314)	184
Accounts payable	(17,961)	(325)
Accrued expenses and other current liabilities	2,762	(19,405)
Other non-current liabilities	1,402	1,105
Net cash provided by operating activities	23,366	16,642
Cash flows from investing activities:
Capital expenditures	(6,883)	(1,903)
Website and software development costs	(13,421)	(17,505)
Business and asset acquisitions, net of cash acquired	(2,159)
Net cash used for investing activities	(22,463)	(19,408)
Cash flows from financing activities:
Proceeds from initial public offering, net of issuance costs	126,538
Cash paid for acquisition related liabilities	(64)	(496)
Proceeds from term loan, net of issuance cost	183,311
Proceeds from paycheck protection program loan		10,000
Repurchase of restricted stock	(64,468)
Exercise of warrants and options	110
Repayments against the credit facilities	(180,745)	(3,500)
Net cash provided by financing activities	64,682	6,004
Effect of exchange rate changes on cash and cash equivalents	(130)	(102)
Net increase in cash and cash equivalents	65,455	3,136
Cash and cash equivalents, beginning of period	50,725	37,818
Cash and cash equivalents, end of period	116,180	40,954
Supplemental cash flow disclosures including non-cash activities:
Cash paid for interest	5,673	10,330
Cash paid for income taxes, net	1,294	1,224
Contingent consideration liability established in connection with acquisitions	1,795
Shares issued in connection with acquisitions and other agreements	6,650	423
Dividends on redeemable convertible preferred stock settled in Company's equity	60,082
Non-cash settlement of warrants and derivative liabilities	63,100
Capitalized stock-based compensation as website and software development costs	8,830
Non-cash consideration for website and software development costs	$ 45	$ 770